A little C# help.

I have a question about a loop... Say I am making a velocity calculation, the user enters the time, the calculation happens... BUT I want the program to display the velocities in small increments leading to the final velocity. Say 25 seconds, I wan to to display it increments of 5, 10, 15, 20, & then 25. say in a lablel Now I can get a loop that will go upto 25 but I want it to display each of its results for say

some of the commands aren't really what c# uses, but hopefully you'll get hte idea. the user inputs some time t, you execute a for loop, from 0 to t. you calculate the velocity at t, print the velocity, and then increase t by 5.